| Mathbox for Glauco Siliprandi |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > meaiuninc3 | Structured version Visualization version GIF version | ||
| Description: Measures are continuous from below: if 𝐸 is a sequence of nondecreasing measurable sets (with bounded measure) then the measure of the union is the limit of the measures. This is the general case of Proposition 112C (e) of [Fremlin1] p. 16 . This theorem generalizes meaiuninc 47147 and meaiuninc2 47148 where the sequence is required to be bounded. (Contributed by Glauco Siliprandi, 13-Feb-2022.) |
| Ref | Expression |
|---|---|
| meaiuninc3.p | ⊢ Ⅎ𝑛𝜑 |
| meaiuninc3.f | ⊢ Ⅎ𝑛𝐸 |
| meaiuninc3.m | ⊢ (𝜑 → 𝑀 ∈ Meas) |
| meaiuninc3.n | ⊢ (𝜑 → 𝑁 ∈ ℤ) |
| meaiuninc3.z | ⊢ 𝑍 = (ℤ≥‘𝑁) |
| meaiuninc3.e | ⊢ (𝜑 → 𝐸:𝑍⟶dom 𝑀) |
| meaiuninc3.i | ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → (𝐸‘𝑛) ⊆ (𝐸‘(𝑛 + 1))) |
| meaiuninc3.s | ⊢ 𝑆 = (𝑛 ∈ 𝑍 ↦ (𝑀‘(𝐸‘𝑛))) |
| Ref | Expression |
|---|---|
| meaiuninc3 | ⊢ (𝜑 → 𝑆~~>*(𝑀‘∪ 𝑛 ∈ 𝑍 (𝐸‘𝑛))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | meaiuninc3.m | . . 3 ⊢ (𝜑 → 𝑀 ∈ Meas) | |
| 2 | meaiuninc3.n | . . 3 ⊢ (𝜑 → 𝑁 ∈ ℤ) | |
| 3 | meaiuninc3.z | . . 3 ⊢ 𝑍 = (ℤ≥‘𝑁) | |
| 4 | meaiuninc3.e | . . 3 ⊢ (𝜑 → 𝐸:𝑍⟶dom 𝑀) | |
| 5 | meaiuninc3.p | . . . . . 6 ⊢ Ⅎ𝑛𝜑 | |
| 6 | nfv 1942 | . . . . . 6 ⊢ Ⅎ𝑛 𝑘 ∈ 𝑍 | |
| 7 | 5, 6 | nfan 1927 | . . . . 5 ⊢ Ⅎ𝑛(𝜑 ∧ 𝑘 ∈ 𝑍) |
| 8 | meaiuninc3.f | . . . . . . 7 ⊢ Ⅎ𝑛𝐸 | |
| 9 | nfcv 2932 | . . . . . . 7 ⊢ Ⅎ𝑛𝑘 | |
| 10 | 8, 9 | nffv 6895 | . . . . . 6 ⊢ Ⅎ𝑛(𝐸‘𝑘) |
| 11 | nfcv 2932 | . . . . . . 7 ⊢ Ⅎ𝑛(𝑘 + 1) | |
| 12 | 8, 11 | nffv 6895 | . . . . . 6 ⊢ Ⅎ𝑛(𝐸‘(𝑘 + 1)) |
| 13 | 10, 12 | nfss 3938 | . . . . 5 ⊢ Ⅎ𝑛(𝐸‘𝑘) ⊆ (𝐸‘(𝑘 + 1)) |
| 14 | 7, 13 | nfim 1924 | . . . 4 ⊢ Ⅎ𝑛((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝐸‘𝑘) ⊆ (𝐸‘(𝑘 + 1))) |
| 15 | eleq1w 2853 | . . . . . 6 ⊢ (𝑛 = 𝑘 → (𝑛 ∈ 𝑍 ↔ 𝑘 ∈ 𝑍)) | |
| 16 | 15 | anbi2d 641 | . . . . 5 ⊢ (𝑛 = 𝑘 → ((𝜑 ∧ 𝑛 ∈ 𝑍) ↔ (𝜑 ∧ 𝑘 ∈ 𝑍))) |
| 17 | fveq2 6885 | . . . . . 6 ⊢ (𝑛 = 𝑘 → (𝐸‘𝑛) = (𝐸‘𝑘)) | |
| 18 | fvoveq1 7437 | . . . . . 6 ⊢ (𝑛 = 𝑘 → (𝐸‘(𝑛 + 1)) = (𝐸‘(𝑘 + 1))) | |
| 19 | 17, 18 | sseq12d 3978 | . . . . 5 ⊢ (𝑛 = 𝑘 → ((𝐸‘𝑛) ⊆ (𝐸‘(𝑛 + 1)) ↔ (𝐸‘𝑘) ⊆ (𝐸‘(𝑘 + 1)))) |
| 20 | 16, 19 | imbi12d 347 | . . . 4 ⊢ (𝑛 = 𝑘 → (((𝜑 ∧ 𝑛 ∈ 𝑍) → (𝐸‘𝑛) ⊆ (𝐸‘(𝑛 + 1))) ↔ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝐸‘𝑘) ⊆ (𝐸‘(𝑘 + 1))))) |
| 21 | meaiuninc3.i | . . . 4 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → (𝐸‘𝑛) ⊆ (𝐸‘(𝑛 + 1))) | |
| 22 | 14, 20, 21 | chvarfv 2283 | . . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝐸‘𝑘) ⊆ (𝐸‘(𝑘 + 1))) |
| 23 | meaiuninc3.s | . . . 4 ⊢ 𝑆 = (𝑛 ∈ 𝑍 ↦ (𝑀‘(𝐸‘𝑛))) | |
| 24 | nfcv 2932 | . . . . . 6 ⊢ Ⅎ𝑘𝑀 | |
| 25 | nfcv 2932 | . . . . . 6 ⊢ Ⅎ𝑘(𝐸‘𝑛) | |
| 26 | 24, 25 | nffv 6895 | . . . . 5 ⊢ Ⅎ𝑘(𝑀‘(𝐸‘𝑛)) |
| 27 | nfcv 2932 | . . . . . 6 ⊢ Ⅎ𝑛𝑀 | |
| 28 | 27, 10 | nffv 6895 | . . . . 5 ⊢ Ⅎ𝑛(𝑀‘(𝐸‘𝑘)) |
| 29 | 2fveq3 6890 | . . . . 5 ⊢ (𝑛 = 𝑘 → (𝑀‘(𝐸‘𝑛)) = (𝑀‘(𝐸‘𝑘))) | |
| 30 | 26, 28, 29 | cbvmpt 5218 | . . . 4 ⊢ (𝑛 ∈ 𝑍 ↦ (𝑀‘(𝐸‘𝑛))) = (𝑘 ∈ 𝑍 ↦ (𝑀‘(𝐸‘𝑘))) |
| 31 | 23, 30 | eqtri 2793 | . . 3 ⊢ 𝑆 = (𝑘 ∈ 𝑍 ↦ (𝑀‘(𝐸‘𝑘))) |
| 32 | 1, 2, 3, 4, 22, 31 | meaiuninc3v 47150 | . 2 ⊢ (𝜑 → 𝑆~~>*(𝑀‘∪ 𝑘 ∈ 𝑍 (𝐸‘𝑘))) |
| 33 | fveq2 6885 | . . . 4 ⊢ (𝑘 = 𝑛 → (𝐸‘𝑘) = (𝐸‘𝑛)) | |
| 34 | 10, 25, 33 | cbviun 5004 | . . 3 ⊢ ∪ 𝑘 ∈ 𝑍 (𝐸‘𝑘) = ∪ 𝑛 ∈ 𝑍 (𝐸‘𝑛) |
| 35 | 34 | fveq2i 6888 | . 2 ⊢ (𝑀‘∪ 𝑘 ∈ 𝑍 (𝐸‘𝑘)) = (𝑀‘∪ 𝑛 ∈ 𝑍 (𝐸‘𝑛)) |
| 36 | 32, 35 | breqtrdi 5157 | 1 ⊢ (𝜑 → 𝑆~~>*(𝑀‘∪ 𝑛 ∈ 𝑍 (𝐸‘𝑛))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 400 = wceq 1568 Ⅎwnf 1811 ∈ wcel 2150 Ⅎwnfc 2917 ⊆ wss 3913 ∪ ciun 4961 class class class wbr 5114 ↦ cmpt 5197 dom cdm 5665 ⟶wf 6536 ‘cfv 6540 (class class class)co 7414 1c1 11104 + caddc 11106 ℤcz 12594 ℤ≥cuz 12865 ~~>*clsxlim 46484 Meascmea 47115 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1823 ax-4 1837 ax-5 1938 ax-6 1995 ax-7 2036 ax-8 2152 ax-9 2160 ax-10 2183 ax-11 2199 ax-12 2220 ax-ext 2742 ax-rep 5243 ax-sep 5262 ax-nul 5274 ax-pow 5340 ax-pr 5408 ax-un 7736 ax-inf2 9613 ax-cnex 11159 ax-resscn 11160 ax-1cn 11161 ax-icn 11162 ax-addcl 11163 ax-addrcl 11164 ax-mulcl 11165 ax-mulrcl 11166 ax-mulcom 11167 ax-addass 11168 ax-mulass 11169 ax-distr 11170 ax-i2m1 11171 ax-1ne0 11172 ax-1rid 11173 ax-rnegex 11174 ax-rrecex 11175 ax-cnre 11176 ax-pre-lttri 11177 ax-pre-lttrn 11178 ax-pre-ltadd 11179 ax-pre-mulgt0 11180 ax-pre-sup 11181 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1571 df-fal 1581 df-ex 1808 df-nf 1812 df-sb 2099 df-mo 2574 df-eu 2604 df-clab 2749 df-cleq 2762 df-clel 2845 df-nfc 2919 df-ne 2966 df-nel 3072 df-ral 3087 df-rex 3097 df-rmo 3376 df-reu 3377 df-rab 3424 df-v 3464 df-sbc 3753 df-csb 3862 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-pss 3933 df-nul 4295 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-tp 4599 df-op 4601 df-uni 4878 df-int 4918 df-iun 4963 df-disj 5082 df-br 5115 df-opab 5179 df-mpt 5198 df-tr 5224 df-id 5560 df-eprel 5565 df-po 5573 df-so 5574 df-fr 5618 df-se 5619 df-we 5620 df-xp 5671 df-rel 5672 df-cnv 5673 df-co 5674 df-dm 5675 df-rn 5676 df-res 5677 df-ima 5678 df-pred 6306 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6496 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-isom 6549 df-riota 7371 df-ov 7417 df-oprab 7418 df-mpo 7419 df-om 7866 df-1st 7989 df-2nd 7990 df-frecs 8281 df-wrecs 8312 df-recs 8361 df-rdg 8400 df-1o 8456 df-2o 8457 df-oadd 8460 df-omul 8461 df-er 8697 df-map 8829 df-pm 8830 df-en 8947 df-dom 8948 df-sdom 8949 df-fin 8950 df-fi 9374 df-sup 9405 df-inf 9406 df-oi 9475 df-card 9928 df-acn 9931 df-pnf 11248 df-mnf 11249 df-xr 11250 df-ltxr 11251 df-le 11252 df-sub 11446 df-neg 11447 df-div 11875 df-nn 12237 df-2 12306 df-3 12307 df-4 12308 df-5 12309 df-6 12310 df-7 12311 df-8 12312 df-9 12313 df-n0 12508 df-z 12595 df-dec 12715 df-uz 12866 df-q 12976 df-rp 13020 df-xneg 13140 df-xadd 13141 df-xmul 13142 df-ioo 13379 df-ioc 13380 df-ico 13381 df-icc 13382 df-fz 13539 df-fzo 13686 df-fl 13828 df-seq 14041 df-exp 14101 df-hash 14370 df-cj 15153 df-re 15154 df-im 15155 df-sqrt 15289 df-abs 15290 df-clim 15542 df-rlim 15543 df-sum 15741 df-struct 17210 df-slot 17245 df-ndx 17257 df-base 17273 df-plusg 17326 df-mulr 17327 df-starv 17328 df-tset 17332 df-ple 17333 df-ds 17335 df-unif 17336 df-rest 17478 df-topn 17479 df-topgen 17499 df-ordt 17558 df-ps 18625 df-tsr 18626 df-psmet 21497 df-xmet 21498 df-met 21499 df-bl 21500 df-mopn 21501 df-cnfld 21506 df-top 23034 df-topon 23051 df-topsp 23073 df-bases 23086 df-lm 23369 df-xms 24460 df-ms 24461 df-xlim 46485 df-salg 46975 df-sumge0 47029 df-mea 47116 |
| This theorem is referenced by: (None) |
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